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FuelFacts
BeveragesPlate 0329 of 1799

Calories in
beverages, whey protein powder isolate

359 kcal per 100 g Beverages, Whey protein powder isolate contains 359 calories per 100 grams, or about 309 calories per 3 scoop. Per 100 g it provides 58.1 g protein, 29.1 g carbohydrate and 1.2 g fat.

By calories that splits 32% carbohydrate, 65% protein, 3% fat — dissected below.

SOURCE·USDA SR Legacy·FDC 173177·REVIEWED JUL 2026

Energy anatomy — per 100 g Plate 0329 of 1799
65%32% 0 90 180 269 359 kcal
Protein 58.1 g × 4 kcal/g 233 kcal · 65%
Carbohydrate 29.1 g × 4 kcal/g 116 kcal · 32%
Fat 1.2 g × 9 kcal/g 10 kcal · 3%
Shorthand total Atwater 4 · 4 · 9 359 kcal
As published by USDA food-specific factors 359 kcal

The 4·4·9 shorthand adds to 359 kcal and USDA publishes 359 kcal. The arithmetic closes, so the axis above is simply that figure divided by the shares.

SourceUSDA FoodData Central, SR LegacyFDC 173177retrieved 2026-07

Per 100 g359kcal
Per 3 scoop309kcal · 86.0 g
Protein58.1g per 100 g
Walk it off63minutes walking
Proteingrams
Carbsgrams
Fatgrams
Walk it offmin at 70 kg

How this is worked out

  1. USDA measures every nutrient per 100 g of edible portion. That row is published here unchanged — nothing is rounded up, smoothed or "adjusted".
  2. The energy figure is USDA's own, derived with food-specific factors. This site never computes the calorie count it publishes.
  3. The Atwater shorthand 4 · 4 · 9 is applied to the protein, carbohydrate and fat grams only to split that energy into shares — and where the shorthand disagrees with the published figure, the gap is printed rather than hidden.
  4. A serving is a straight proportional conversion of the per-100 g row, using USDA's own household measures for the grams.
  5. The walking figure uses MET 4.0 at 70 kg, the same equation the sister site publishes.
per serving   = per 100 g × serving grams ÷ 100
energy shares = 4·P + 4·C + 9·F      (P, C, F in grams)
walk minutes  = kcal ÷ (4.0 × 3.5 × 70 ÷ 200)

Full data & method →

Calories in a typical serving

Per-100 g figures are useful for comparison but nobody eats 100 g of anything on purpose. These are the USDA's own household measures.

ServingGramsCaloriesProteinCarbsFat
3 scoop86.0 g 309 50.0 g25.0 g1.0 g

SOURCE·USDA SR Legacy·REVIEWED JUL 2026

Full nutrition, per 100 g and per 3 scoop

NutrientPer 100 gPer 3 scoop
Energy359 kcal309 kcal
Protein58.1 g50.0 g
Total fat1.2 g1.0 g
Saturated fat0.6 g0.5 g
Carbohydrate29.1 g25.0 g
Fibre0.0 g0.0 g
Sugars1.2 g1.0 g
Sodium372.0 mg319.9 mg
Potassium872.0 mg749.9 mg
Calcium698.0 mg600.3 mg
Iron1.3 mg1.1 mg
Vitamin C34.9 mg30.0 mg
Vitamin A872.0 µg749.9 µg
Cholesterol12.0 mg10.3 mg
Water0.9 g0.7 g

A dash means the nutrient was not measured for this item, which is not the same as zero.

SOURCE·USDA SR Legacy·FDC 173177·REVIEWED JUL 2026

How beverages, whey protein powder isolate compares

Among the 86 beverages items on this site, beverages, whey protein powder isolate ranks 13 of 86 by calorie density, against a category average of 116 kcal per 100 g — so it is about 209% more calorie-dense than typical for its group.

It carries 16.2 g of protein per 100 calories — a genuinely protein-dense food.

To burn off 3 scoop (309 kcal), a 70 kg adult would walk for roughly 63 minutes — see the walking calculation on our sister site, or pick a different activity. Treat that as a sense of scale rather than a rule: eating and moving are not a simple ledger.

SOURCE·USDA SR Legacy·REVIEWED JUL 2026

A reference table describes the average beverages, whey protein powder isolate. Yours was grown somewhere, picked at some ripeness, and cooked by you.

Questions this entry settles

How many calories are in beverages, whey protein powder isolate?

Beverages, Whey protein powder isolate contains 359 calories per 100 g, which works out to about 309 calories per 3 scoop. It also provides 58.1 g of protein, 29.1 g of carbohydrate and 1.2 g of fat per 100 g.

What is the macro breakdown of beverages, whey protein powder isolate?

By calories, beverages, whey protein powder isolate is roughly 32% carbohydrate, 65% protein and 3% fat. That makes it a predominantly protein-based food.

How long does it take to burn off 3 scoop?

About 63 minutes of ordinary walking for a 70 kg adult (MET 4.0). That is a rough guide for scale, not a prescription — appetite and activity interact in ways a simple subtraction does not capture.

Is this figure exact for the beverages, whey protein powder isolate I bought?

No. These are USDA reference values, averaged across samples. Real foods vary with variety, ripeness, growing conditions, cut, brand and how they were cooked — 10–20% either way is normal. Use them for planning, not precision.

Source: USDA FoodData Central, SR Legacy — public domain, reviewed JUL 2026. Full USDA description: "Beverages, Whey protein powder isolate". General information only — not medical or nutrition advice. Values are averages for a food type and vary by brand, ripeness and preparation.

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Amit Sharma

Auckland real-estate agent and marketer. Builds free, sourced data tools.